CN108019542B - Turbine type pressure reducing and power generating intelligent pressure reducing valve and control method - Google Patents

Abstract

The invention relates to the technical field of valves, and discloses a turbine type pressure reducing and power generating intelligent pressure reducing valve and a control method. The intelligent turbine pressure reducing and power generating pressure reducing valve comprises a pipeline type power generator, a data acquisition assembly, a data processing device and a display terminal; the pipeline type generator adopts a turbine type to generate electricity and is used for providing a working power supply for a data acquisition assembly, a data processing device and an actuator of the valve, and the data acquisition assembly is arranged in front of the valve body and/or in the valve and/or behind the valve and is used for acquiring medium parameters in the valve body in real time and transmitting the parameters to the data processing device and a display terminal; and the data processing device correspondingly operates the actuator according to the real-time parameters provided by the data acquisition assembly.

Description

Turbine type pressure reducing and power generating intelligent pressure reducing valve and control method

Technical Field

The invention relates to the field of valves, in particular to a turbine type pressure reducing and power generating intelligent pressure reducing valve and a control method.

Background

At present, global resources are in short supply, various energy sources such as water resources and gas sources are in a short supply state, the concept of intelligent water affairs is developed according to water resources, water is saved, effective leakage control is achieved, advanced pressure valves with flow detection functions are proposed in the United states and Italy successively, leakage can be controlled to be as small as possible, but a flow detection device of the pressure valves needs an external power supply or a battery and depends on external power supply, and only flow parameters need to be detected, so that the power consumption is small. However, the intelligent water service is far not limited to leakage control, and various parameters such as water quality and the like need to be measured so as to comprehensively evaluate water flowing in the valve, so that various types of detection instruments need to be added, an external power supply or a battery which is simply arranged cannot fully drive various detection instruments to operate simultaneously, and if the effect of comprehensive power supply is achieved, the external power supply or the battery needs to be designed in a complex way, so that the engineering quantity is large, the cost is high, and the later maintenance is troublesome.

The related case of water flow power generation also exists in the prior art, but the case is only the combination of water flow power generation and a valve, and a detection module is not involved, namely, the case of supplying power to the detection module by using electric energy generated by water flow power does not exist in the prior art. Meanwhile, in the water flow power generation technology in the prior art, the turbine is directly pushed to rotate by utilizing fluid acting force, and the spherical rotating wheel is adopted in the prior art, so that the electromagnetic induction generator is driven to generate power, but the turbine is not specifically designed for the flow of water flow, namely when the water flow is large, the turbine is greatly impacted, the turbine is possibly damaged, and meanwhile, due to the fact that the water flow is not uniform, when the water flow passes through the turbine, the electromagnetic induction generator is unstable in power generation, and the service life of a rechargeable battery of the electromagnetic induction generator is directly influenced. In addition, the high-pressure water flow can also cause overload of the pressure reducing valve, and the service life of the pressure reducing valve can be shortened when the pressure reducing valve is in a high-pressure working state for a long time.

Disclosure of Invention

The invention aims to overcome at least one defect in the prior art, and provides the turbine type pressure reducing and generating intelligent pressure reducing valve which can automatically detect data in the valve body without an external power supply and perform self closed-loop control according to a detection result, and integrates the functions of power generation, data acquisition and automatic control.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the intelligent pressure reducing valve comprises a pressure reducing valve body, an actuator for controlling the opening degree of the valve body, a pipeline type generator, a data acquisition assembly, a data processing device and a display terminal, wherein the pipeline type generator is arranged on the valve body;

the pipeline type generator is used for providing a working power supply for the data acquisition assembly, the data processing device and the actuator of the valve, and comprises a centripetal water turbine and a generator, wherein the generator is connected with the centripetal water turbine, the centripetal water turbine comprises an upper casing, a lower casing and a turbine assembly, the lower casing is respectively provided with a water inlet and a water outlet, the turbine assembly penetrates through the upper casing and the lower casing, and water flow enters from the water inlet of the lower casing, penetrates through the turbine assembly and flows out from the water outlet of the lower casing; the turbine assembly comprises a centripetal turbine and a turbine shaft, the centripetal turbine is arranged in the lower casing, and the turbine shaft is connected with the centripetal turbine and the generator;

the data acquisition assembly is arranged in front of the valve body and/or in the valve and/or behind the valve and is used for acquiring medium parameters in the valve body in real time and transmitting the parameters to the data processing device and the display terminal; and the data processing device correspondingly operates the actuator according to the real-time parameters provided by the data acquisition assembly.

The intelligent pressure reducing valve generates power through the power generation device of the intelligent pressure reducing valve, provides electric energy for the electric elements of the intelligent pressure reducing valve and does not need an additional power supply. Compared with a common power generation device with a spherical rotating wheel, the design method of the centripetal turbine in the aircraft engine is introduced into water flow power generation, the efficiency of the centripetal turbine is higher and reaches over 86%, the power generation device is particularly suitable for high-pressure water flow (200-300 m/S), the power generation efficiency is high, and the pressure reduction of a pressure reducing valve can be assisted. And various data acquisition and detection are carried out on the fluid flowing in the valve body through different data acquisition assemblies arranged at all parts of the valve body, the acquired and detected data are transmitted to a data processing device and are displayed through a display terminal. And the data processing device performs closed-loop control on the valve according to the feedback data condition.

Furthermore, the turbine shaft is fixed in the upper casing through an upper pair of bearings and a lower pair of bearings, a distance sleeve is further sleeved on the turbine shaft between the bearings, an elastic hoop is further arranged on the bearings and used for preventing the bearings from moving, the water outlet is an S-shaped flow passage and gradually rises along the water outlet direction.

Further, entad turbine includes the volute, be equipped with entad turbine in the spiral case, guide vane encircles 360 evenly distributed of entad turbine, entad turbine is equipped with the guide vane of water conservancy diversion outward, entad turbine includes inner ring and outer loop, be fixed with rotatory big blade on the outer loop, still be equipped with the rotatory little blade of fixing on the outer loop between the arbitrary adjacent big blade, the inner ring cover forms entad turbine's water inlet and delivery port on the outer loop, the both ends of big blade extend to water inlet and delivery port respectively, the one end of little blade extends to the water inlet, and the other end is less than the position of delivery port in axial direction, still be equipped with the screwed pipe of installation turbine shaft on the outer loop, the outer wall of inner ring passes through the screw thread installation under in the machine casket.

Furthermore, the diameter of the flow channel in the volute is from large to small according to the water flow entering direction, the guide vane is fixed in the casing below the volute, the thickness of the guide vane in the radial direction is larger than the diameter of the water outlet of the centripetal turbine, and the edge of the guide vane is bent and rolled.

Preferably, the outer wall of the outer ring is further provided with a labyrinth grid for reducing leakage of water flow from the high-pressure end to the low-pressure end

Further, the large blade is bent in a space spiral shape along the radial direction and the axial line, the small blade is bent in a space spiral shape along the radial direction and the axial line, and the length of the small blade is one third to two thirds of the length of the large blade.

Furthermore, the battery assembly comprises a rectifying module, a filtering module, a voltage transformation module and a rechargeable battery which are connected in sequence. And the rechargeable battery is respectively connected with the data acquisition assembly, the data processing device and the display terminal. The electric energy transmitted by the generator is rectified, filtered and transformed and then transmitted to the electric element of the valve through the rechargeable battery to supply power.

Further, the data acquisition assembly comprises one or more of a temperature sensor, a flow metering device, a water quality sensor and a pressure sensor. The valve can collect and detect various data in the valve.

Furthermore, the data processing device comprises a PLC control module, the PLC control module is integrated with a wireless communication module, and the data processing device is communicated with a remote upper computer through the wireless communication module.

Another object of the present invention is to provide a method for controlling a turbine-type pressure reducing and generating intelligent pressure reducing valve, the pressure reducing valve including pressure sensors distributed before and after the valve, the method including the steps of:

s1, high-pressure water flow firstly passes through a pipeline type generator, the generator generates electricity and charges a battery assembly, then the high-pressure water flow is changed into low-pressure water flow and enters a valve body of a reducing valve, and the battery assembly outputs constant voltage to provide a working power supply for a data acquisition assembly, a data processing device and an actuator;

s2, the data acquisition element acquires corresponding data and transmits the corresponding data to the data processing device and the display terminal;

s3, the data processing device performs related operations on the actuator according to the data display condition in the step S2, so that the opening and closing and opening conditions of the valve body are controlled;

and S4, transmitting the medium related parameters to an operator in an NB-IOT mode when the valve body is in a constant pressure output state after running to the valve.

Compared with the prior art, the invention has the beneficial effects that:

the multifunctional pressure reducing valve creatively integrates three independent functional devices, namely the valve, data acquisition and power generation, and can generate power by utilizing the self kinetic energy of a circulating medium in the pressure reducing valve while having a data acquisition function, so that a working power supply is provided for a data acquisition assembly and an actuator of the pressure reducing valve, the self-sufficiency of the electric energy of the multifunctional pressure reducing valve is realized, and an external power supply is not required.

According to the multifunctional valve, the data acquisition assembly transmits the acquired relevant parameters to the data processing device, and finally the data processing device controls the relevant actions of the actuator of the pressure reducing valve, so that the relevant parameters of the multifunctional valve, such as full-automatic feedback control, automatic pressure regulation and the like, are realized, and manual participation is not needed.

The design method of the centripetal turbine in the aero-engine is creatively introduced into water flow power generation, the efficiency of the centripetal turbine is higher than that of a mixed flow type and an inclined flow type which are commonly used in the water turbine industry, the power generator is designed into an upper casing and a lower casing integrated structure around the centripetal turbine, and the radial turbine power generation device has the advantages of compact structure, small size, flexibility and convenience in installation and has high practical value.

The centripetal turbine adopts the flow structure with the large and small blades, greatly improves the power generation efficiency by over 86 percent, is widely applied to various pipeline type generators, is particularly suitable for high-pressure water flow environments (200-300 m/S), can control the direction of high-pressure water flow through the guide blades and continuously impacts the centripetal turbine, and greatly improves the conversion rate of water flow potential energy by matching with the guide blades due to the adoption of the flow structure with the large and small blades.

The labyrinth type grid teeth are also arranged on the outer wall of the outer ring and used for reducing the leakage of water flow from the high-pressure end to the low-pressure end; the diameter of the flow channel in the volute is from large to small according to the water flow entering direction, so that the high pressure and the flow speed of the water flow can be always kept; the outer wall of the inner ring is also provided with threads for rotation, so that an additional installation and fixing mechanism is not needed, and the use and the installation are convenient.

The pressure reducing valve has the advantage of self-sufficiency of electric energy generated by the power generation device, can be correspondingly provided with various data acquisition elements such as a temperature sensor, a flow data acquisition device, a water quality sensor and the like, can acquire various parameters of a medium, and provides a large amount of reference data for a user.

Drawings

Fig. 1 is a schematic structural diagram of a T-type intelligent pressure reducing valve.

Fig. 2 is a schematic view of a centripetal turbine structure 1.

Fig. 3 is a schematic view of a centripetal turbine structure 2.

Fig. 4 is a schematic view of a centripetal turbine structure 3.

Fig. 5 is a schematic view of a centripetal turbine structure 4.

Fig. 6 is a schematic view of a centripetal turbine structure 5.

Fig. 7 is a cross-sectional view of a tube generator.

Fig. 8 is a schematic view of a pipe generator.

Fig. 9 is a schematic structural view of a radial inflow turbine.

Fig. 10 is a schematic view of the electrical connection structure of the valve.

Fig. 11 is a schematic diagram of actuator control connection of the T-type intelligent pressure reducing valve.

The device comprises a volute 1, a guide vane 2, a radial turbine 3, a radial turbine 4, a radial turbine water inlet 5, a radial turbine water outlet 6, an upper casing 7, a lower casing 7, a generator 8, a radial turbine 9, a volute water inlet 11, a volute flow channel 12, a volute flow channel 31, an outer ring 32, an inner ring 33, a large vane 34, a small vane 35, a threaded pipe 36, a thread 37, a labyrinth, a turbine shaft 91, a bearing 92, a bearing 93, a distance sleeve 94, an elastic hoop 95, a nut 96, a nut 97, a sealing flange 101, an upper cavity electromagnetic valve 125, a valve rear electromagnetic valve 126, an ultrasonic flowmeter 131 and a pressure reducing valve body 133.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent;

for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.

Example 1

As shown in fig. 1, the present embodiment provides a turbine-type intelligent pressure reducing valve for pressure reduction and power generation, and takes a T-type pressure reducing valve as an example. The intelligent pressure reducing valve comprises a pressure reducing valve body 133, a pipeline type generator, a data acquisition assembly, a data processing device and a display terminal, wherein the pipeline type generator is connected with the pressure reducing valve body 133.

The data acquisition assembly comprises a flowmeter, a pressure sensor and a water quality sensor; in the specific implementation process, according to specific requirements, such as the opening of the valve body and the temperature of the fluid, other types of data acquisition assemblies can be adopted. The flow meter adopts the quantity that can the metering pipe network in this embodiment, has the ultrasonic flowmeter 131 of temperature compensation function simultaneously, and ultrasonic flowmeter 131 sets up anterior at intelligent relief pressure valve body through the three-way pipe. The pressure sensors are provided one before and one after the valve of the pressure reducing valve body 33, respectively, and the water quality sensor is provided inside the pressure reducing valve body 133.

As shown in fig. 7 to 8, the pipeline generator includes a centripetal turbine 3 and a generator 8, the generator 8 is connected to the centripetal turbine 3, the centripetal turbine 3 includes an upper casing 6, a lower casing 7 and a turbine assembly, the lower casing 7 is respectively provided with a water inlet and a water outlet, the turbine assembly penetrates through the upper casing 6 and the lower casing 7, water flows into the lower casing 7 from the water inlet, passes through the turbine assembly, and flows out from the water outlet of the lower casing 7, the water outlet is an S-shaped flow channel, gradually rises along the water outlet direction, and is connected to the front portion of the pressure reducing valve body through a sealing flange 101;

as shown in fig. 9, the turbine assembly of this embodiment includes a radial turbine 3 and a turbine shaft 91, the radial turbine 3 is disposed in a lower casing 7, the turbine shaft 91 is connected to the radial turbine 3 and a generator 8, the turbine shaft 91 is fixed in an upper casing 6 through a bearing 92 and a bearing 93, a distance sleeve 94 is further sleeved on the turbine shaft 91 between the bearing 92 and the bearing 93, and an elastic clamp 95 is further disposed on the bearing 92 for preventing the bearing 92 from moving;

as shown in fig. 2 to 6, the present embodiment further includes a volute 1, a centripetal turbine 3 is disposed in the volute 1, a flow guide vane 2 for guiding flow is disposed outside the centripetal turbine 3, the centripetal turbine 3 includes an inner ring 32 and an outer ring 31, a rotating large vane 33 is fixed on the outer ring 31, a rotating small vane 34 fixed on the outer ring 31 is further disposed between any two adjacent large vanes 33, the inner ring 32 is sleeved on the outer ring 31 to form a centripetal turbine water inlet 4 and a centripetal turbine water outlet 5 of the centripetal turbine 3, two ends of the large vane 33 respectively extend to the centripetal turbine water inlet 4 and the centripetal turbine water outlet 5, one end of the small vane 34 extends to the centripetal turbine water inlet 4, the other end is lower than the centripetal turbine water outlet 5 in the axial direction, a threaded pipe 35 for mounting a turbine shaft 91 is further disposed on the outer ring 31, a thread 36 is further disposed on an outer wall of the inner ring for fixing on a lower casing 7, the diameter of the flow channel in the volute 1 is reduced from large to small according to the water flow entering direction, the outer wall of the outer ring 31 is further provided with a labyrinth grid tooth 37 for reducing the leakage of water flow from a high-pressure end to a low-pressure end, and the thickness of the guide vane 2 in the radial direction is larger than the caliber of the water outlet.

The working principle of the pipe type generator of the embodiment is as follows: high-pressure water flow enters the volute 1 from the lower casing 7 through the volute water inlet 11, and impacts the centripetal turbine 3 under the guidance of the static guide vanes 2, so that the centripetal turbine 3 rotates and outputs power to the generator 8, meanwhile, the water pressure is reduced, and the water flow flows out from the centripetal turbine water outlet 5 and the water outlet of the lower casing 7 in sequence and then flows to the pressure reducing valve body 33.

The diameter of the flow channel in the volute 1 is set from large to small according to the water flow entering direction, the high pressure and the flow speed of the water flow can be kept all the time, the water outlet of the lower casing 7 is an S-shaped flow channel and gradually rises along the water outlet direction, and the time of the high-pressure water flow in the centripetal turbine 3 can be prolonged.

As shown in fig. 3, the guide vanes 2 are uniformly distributed around the radial turbine 3 at 360 °, and the edges of the guide vanes 2 are curved and rolled up to form a trumpet-like shape, which is provided for collecting water flow.

As shown in fig. 6, the length of the small blade is one third to two thirds of the length of the large blade, and the large blade and the small blade are spirally bent in space along the radial direction and the axial line.

As shown in fig. 10, the battery assembly includes a rectifying module, a filtering module, a voltage-reducing module, and a rechargeable battery, which are connected in sequence.

As shown in fig. 11, the intelligent pressure reducing valve is provided with an actuator for controlling the opening degree of the valve body, and the actuator comprises two-position two-way solenoid valves, wherein an upper cavity solenoid valve 125 and a valve rear solenoid valve 126 respectively control the pipeline opening and closing of a water inlet and a water outlet of a control cavity of the T-type intelligent pressure reducing valve. The two electromagnetic valves are both connected with a data processing device.

The data processing device comprises a PLC control module, the PLC control module integrates a wireless communication module, and the data processing device is communicated with a remote upper computer through the wireless communication module. The display terminal is a display screen of a remote upper computer, and can also be a touch display screen arranged near the valve according to specific conditions.

The control method of the intelligent pressure reducing valve comprises the following steps:

s1, high-pressure water flow firstly passes through a pipeline type generator, the generator generates electricity and charges a battery assembly, the battery assembly outputs constant voltage to provide a working power supply for a data acquisition assembly, a data processing device and an actuator, and then the constant voltage is changed into low-pressure water flow to enter a T-shaped intelligent pressure reducing valve body;

the three-phase current of generator output is carried to battery pack, becomes the direct current with the alternating current through rectifier module to through filtering module to interference, the purification power are got rid of to the electric current, then through the vary voltage module, according to the demand with electric elements, the vary voltage module is step-down module or step-up module, carries out step-down processing or steps up the size of handling in order to realize satisfying follow-up required working power. The processed three-phase current is input to a rechargeable battery to charge the rechargeable battery. The rechargeable battery provides power for the data acquisition assembly, the data processing device and the pressure reducing valve actuator.

And S2, the data acquisition element acquires corresponding data and transmits the corresponding data to the data processing device and the display terminal.

And the data acquisition element starts to work after power is supplied. The pressure sensors arranged in front of the valve and behind the valve respectively collect the pressure values in front of the valve and behind the valve, the ultrasonic flowmeter 131 collects the flow of fluid flowing into the valve, and the water quality sensor collects the water quality of the fluid in the valve.

The PLC control module receives a valve body inlet flow signal of the ultrasonic data acquisition device, water pressure change signals of the two pressure sensors and a water quality signal of the water quality sensor, and communicates with a remote upper computer through the wireless communication module.

And S3, performing related operation on the actuator according to the data display condition in the step S2 so as to control the opening and closing and opening conditions of the valve body.

The PLC control module controls the electromagnetic valve to perform corresponding actions by comparing the acquired pressure signal with a preset pressure threshold value. When an instruction is sent to the upper cavity electromagnetic valve 125, the system pressure enters the upper part of the control cavity, the pressure is increased to enable the main valve to tend to close, and the real-time pressure is fed back to the PLC control module through the pressure sensor. When the PLC control module commands the post-valve solenoid valve 126, the system pressure is vented from the outlet and the main valve tends to open. By controlling the opening and closing speed of the valve, constant pressure output after the valve is finally achieved.

And S4, transmitting the medium related parameters to an operator in an NB-IOT mode when the valve body is in a constant pressure output state after running to the valve.

The PLC control module can realize remote data acquisition and processing of the valve and the pipeline, statistical analysis, real-time control, accident alarm, data communication, equipment management and the like by acquiring data such as pressure sensors, flowmeters, temperature sensors, water quality, valve opening and the like.

An operator can check parameters such as the pressure of the current valve body, the flow of the valve body, the temperature of fluid, the water quality and the like through a display screen of the upper computer. And parameter setting can be carried out through an upper computer, for example, pressure threshold values or temperature threshold values and the like are set for the PLC control module. Thus, the running state of the valve is monitored in real time.

In the embodiment, the guide vanes are uniformly distributed according to 360 degrees to form a channel for promoting the high-pressure water flow to rotate spirally, so that the high-pressure water flow forms regular centripetal gathering flow, continuously impacts the centripetal turbine to push the centripetal turbine to rotate, the turbine shaft on the outer ring is driven to rotate, and the turbine shaft is connected with the generator to generate electricity.

In this embodiment, the outer ring 31 is driven to rotate while impacting the outer ring 31, so a gap is formed between the outer ring 31 and the stationary guide vanes, and in order to prevent the high-pressure water from leaking to the low-pressure end from the gap, the labyrinth grid 37 is arranged on the outer wall of the outer ring 31 and sealed by the grid.

The embodiment generator adopts a pipeline type generator, adopts an upper casing integrated structure and a lower casing integrated structure, has the advantages of compact structure, small size and flexibility, and is smaller in volume, more convenient to install and higher in practical value compared with a mixed flow type and inclined flow type water turbine.

This embodiment pipeline formula generator adopts centripetal turbine structure, avoids the direct impact that faces high-pressure rivers (200 ~ 300 m/S) of turbine, can control high-pressure rivers' S direction through guide vane, constantly strikes centripetal turbine, and centripetal turbine has then adopted the flow structure of big or small blade, cooperation guide vane has greatly improved the conversion rate of rivers potential energy, not only the generating efficiency is high (more than 86%), can assist the relief pressure valve to decompress in addition, alleviate the burden of relief pressure valve.

In this embodiment, the guide vanes 2 are fixed in the lower casing by screws, and are adjustable or movable compared with the guide vanes in the existing water turbine, and the fixed connection can counteract the reverse impact force when the high-pressure water flow rushes to the large and small vanes.

The same or similar reference numerals correspond to the same or similar parts; the positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent. It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (7)

1. A turbine type pressure-reducing and power-generating intelligent pressure-reducing valve comprises a pressure-reducing valve body, wherein the valve body is provided with an actuator for controlling the opening degree of the valve body;

the pipeline type generator is used for providing a working power supply for the data acquisition assembly, the data processing device and the actuator of the valve, and comprises a centripetal water turbine and a generator, wherein the generator is connected with the centripetal water turbine, the centripetal water turbine comprises an upper casing, a lower casing and a turbine assembly, the lower casing is respectively provided with a water inlet and a water outlet, the turbine assembly penetrates through the upper casing and the lower casing, and water flow enters from the water inlet of the lower casing, penetrates through the turbine assembly and flows out from the water outlet of the lower casing; the turbine assembly comprises a centripetal turbine and a turbine shaft, the centripetal turbine is arranged in the lower casing, and the turbine shaft is connected with the centripetal turbine and the generator;

the data acquisition assembly is arranged in front of the valve body and/or in the valve and/or behind the valve and is used for acquiring medium parameters in the valve body in real time and transmitting the parameters to the data processing device and the display terminal; the data processing device carries out corresponding operation on the actuator according to the real-time parameters provided by the data acquisition assembly;

the turbine shaft is fixed in the upper casing through an upper pair of bearings and a lower pair of bearings, a distance sleeve is further sleeved on the turbine shaft between the bearings, an elastic hoop is further arranged on the bearings and used for preventing the bearings from moving, the water outlet is an S-shaped flow passage and is gradually increased along the water outlet direction;

the centripetal turbine comprises a volute, a centripetal turbine is arranged in the volute, guide vanes for guiding flow are arranged outside the centripetal turbine, the guide vanes are fixedly arranged in a lower casing through screws and are uniformly distributed in a 360-degree manner around the centripetal turbine, the centripetal turbine comprises an inner ring and an outer ring, large rotating vanes are fixed on the outer ring, small rotating vanes fixed on the outer ring are further arranged between any two adjacent large vanes, the inner ring is sleeved on the outer ring to form a water inlet and a water outlet of the centripetal turbine, two ends of each large vane respectively extend to the water inlet and the water outlet, one end of each small vane extends to the water inlet, the other end of each small vane is lower than the water outlet in the axial direction, a threaded pipe for mounting a turbine shaft is further arranged on the outer ring, and the outer wall of the inner ring is mounted in the lower casing through threads;

the diameter of the flow channel in the volute is from large to small according to the water flow entering direction, the guide vane is fixed in the lower casing, the thickness in the radial direction is larger than the caliber of the water outlet of the centripetal turbine, and the edge of the guide vane is bent and rolled.

2. The turbine type intelligent pressure reducing valve for pressure reduction and power generation as claimed in claim 1, wherein a labyrinth grid is further arranged on the outer wall of the outer ring for reducing leakage of water flow from the high-pressure end to the low-pressure end.

3. The turbine-type pressure reducing and power generating intelligent pressure reducing valve as recited in claim 1, wherein the large blade is spirally bent in space along a radial direction and an axis, the small blade is spirally bent in space along a radial direction and an axis, and the length of the small blade is one third to two thirds of the length of the large blade.

4. The turbine type intelligent pressure reducing valve for pressure reduction and power generation as claimed in claim 1, wherein the battery assembly comprises a rectifying module, a filtering module, a voltage transformation module and a rechargeable battery which are connected in sequence, and the rechargeable battery is connected with the data acquisition assembly, the data processing device and the display terminal respectively.

5. The intelligent turbine pressure reducing and power generating pressure reducing valve as claimed in claim 1, wherein the data acquisition assembly comprises one or more of a temperature sensor, a flow metering device, a water quality sensor and a pressure sensor.

6. The intelligent turbine pressure reducing and power generating valve as claimed in claim 1, wherein the data processing device comprises a PLC control module, and the PLC control module integrates a wireless communication module and communicates with a remote upper computer through the wireless communication module.

7. A control method of an intelligent pressure reducing valve for turbine pressure reduction and power generation is characterized in that the pressure reducing valve comprises pressure sensors distributed in front of the valve and behind the valve, and the control method comprises the following steps:

s1, high-pressure water flow firstly passes through a pipeline type generator, the generator generates electricity and charges a battery assembly, then the high-pressure water flow is changed into low-pressure water flow and enters a valve body of a reducing valve, and the battery assembly outputs constant voltage to provide a working power supply for a data acquisition assembly, a data processing device and an actuator;

s2, the data acquisition element acquires corresponding data and transmits the corresponding data to the data processing device and the display terminal;

s3, the data processing device performs related operations on the actuator according to the data display condition in the step S2, so that the opening and closing and opening conditions of the valve body are controlled;

and S4, transmitting the medium related parameters to an operator in an NB-IOT mode when the valve body is in a constant pressure output state after running to the valve.

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